Another theme could be the clash of different universes. Amazo is from the DC universe and Saitama is from One Punch Man. Fanfics might play around with how these two different universes' rules and powers interact when these two characters meet. Also, there could be themes related to respect and rivalry. Saitama is often very nonchalant about his power, while Amazo is a complex android with various abilities. How they view each other in the fanfic can create interesting storylines.
Saitama would win. He has shown incredible strength with just one punch. His power seems limitless, and in a fanfiction scenario, his simplicity and raw power would likely overpower Jiren's more complex abilities.
One possible plot twist could be that Jiren discovers a way to nullify Saitama's strength. Maybe he finds some sort of energy - draining technique that weakens Saitama over time. Another could be that Saitama holds back for some reason, like he wants to see the full extent of Jiren's power, and in doing so, he gets into a real struggle.
Wang Weiqin was an official at the end of the Qing Dynasty. He was sentenced to death by a thousand cuts for killing the Li family. Wang Weiqin used his power to plan and lead his family and villagers to slaughter more than ten members of the Li family. However, the daughter-in-law of the Li family, Xiao Li Ma, escaped and sued Wang Weiqin to the local government, but many times the complaint failed to be avenged. In the end, under the leadership of the newly established Minister of Work Inspection Bureau, Na Tong, the Li family's grievances were upheld, and Wang Weiqin was sentenced to death by a thousand cuts. This case caused a sensation at the time, and there were still legends and plays about Wang Weiqin's case circulating in the local area.
Wang Weiqin was an official at the end of the Qing Dynasty. He was sentenced to death by a thousand cuts for committing a family massacre. In 1901, Wang Weiqin planned and led his family and villagers to massacre more than ten members of the Li family in the village. He was accused and went through a long process of accusation and appeal, and was finally executed in 1905. This case attracted widespread attention at the time, and there were still legends and plays about Wang Weiqin's case circulating in the local area.
Wang Weiqin's death by dismemberment referred to the late Qing Dynasty, when the High Scholar Wang Weiqin was sentenced to death by dismemberment for committing a family massacre. Wang Weiqin planned and led his family and villagers to massacre more than ten members of the Li family in the village in Funing District, Qinhuangdao City, Hebei Province. After he was accused, Xiao Li Ma repeatedly went to the county, government, Zhili and other places to sue Wang Weiqin, but failed to seek justice. In the end, under the leadership of the Minister of Work Inspection Bureau, Na Tong, the Li family's grievances were upheld, and Wang Weiqin was sentenced to death. The case attracted widespread attention at the time, and legends and plays about Wang Weiqin's case were still circulating in the local area.
Wang Weiqin was an official at the end of the Qing Dynasty. He was sentenced to death by a thousand cuts for committing a family massacre. Wang Weiqin had a bloody massacre in 1901. He planned and led his family and some villagers to slaughter more than ten members of the Li family in the village. A daughter-in-law of the Li family, Xiao Li Ma, successfully escaped and went to the county, government, and Zhili to sue Wang Weiqin, but for a long time, she could not seek justice. In the end, under the leadership of the newly established Minister of Work Inspection Bureau, Na Tong, the Li family's grievances were upheld, and Wang Weiqin was executed. This case caused a sensation at home and abroad at that time, and legends and plays about Wang Weiqin's case were still circulating in the local area.
Wang Weiqin was an official and county magistrate in the Qing Dynasty. Wang Weiqin was sentenced to death by a thousand cuts for killing more than ten members of the Li family. His crime caused a sensation at that time, and under the order of Empress Dowager Cixi, he was cut into pieces and executed. This case happened in 1901. After nearly three years of accusations and investigations, Wang Weiqin was finally brought to justice under the leadership of the newly established Minister of Work Inspection Bureau, Na Tong. This case was still passed down in local legends and plays, which had a far-reaching impact.
In a Saitama vs OC fanfiction, a plot twist could be that the OC has the power to make Saitama lose his strength. However, the OC doesn't want to use this power because they admire Saitama and want to test their own strength against him fairly. Another interesting twist could be that the OC is a part of a bigger plan by some mysterious organization. They use the fight against Saitama as a distraction while they carry out their real objective elsewhere. And as the fight progresses, Saitama realizes this and has to decide whether to continue the fight or go after the real threat.
Well, it really depends on how the OC (Original Character) is designed. If the OC has some really unique and powerful abilities that can counter Saitama's strength, like the ability to nullify physical attacks or something really out - of - the - box, then the OC might stand a chance. But Saitama is known for his one - punch knockout power. So, in most cases, Saitama would probably win due to his overwhelming strength that has defeated almost every foe he's faced so far.